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Nn. 608,657. Patented Aug. 9, |898.

R. M. DYER & LA VERNE W. NDYES.

WINDMILL.

(Application led Aug. 5, 1897.) (No Model.)

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Fnrnu'r ROBERT M. DYER AND LA VERNE W. NOYES, OF CHICAGO, ILLINOIS,

ASSIGNORS TO THE AERMOTOR COMPANY, OF SAME PLACE.

WINDIVHLL.

SPECIFICATION forming part of Letters Patent No. 608,657, dated August 91898. v

Application tiled August 5, 1897. Serial No. 647,151 (N0 model.)

To (LZ whom, it may con/cern,.-

Be it known that we, ROBERT M. DYER and LA VERNE W. NOYES, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Vindmills, of which thefollowing isa full, clear, concise, and exact description, reference behad to the accompanying drawings, forming a part of this specification.

Our invention relates to a windmill, our object being to provide an improved 1nechanism for furling the mill and throwing on and off the brake.

In accordance with our invention the tail of the mill is connected with a furling-lever which acts to lock the tail in position when out of the wind and which is resiliently pressed to start the tail inits movement when being thrown out of the wind. The furl-lever also controls the brake, throwing the brake on when the tail is out of the wind and oft' when the tail is in the wind.

Referring tothe accompanying drawings, Figure l is a plan view of the mill equipped with our invention. Fig. 2 is a view in elevation. Fig. 3 is a plan view showing the different positions of the furling and braking mechanism. Fig. 4C is a detached view of the tail and furl-lever. Fig. 5 is a detail view of the rollers which guide the furlingchain. i

Like letters refer to like parts in the several figures'.

The tail-bone ce is pivoted upon the frame b at a' and is connected by the coiled spring a2 with the arm c of the furl-lever c, pivoted upon the frame I) at o2 to one side of the pivot of the tail-bone. To the arm eS of the furllever is secured the furling-chain c4, which passes around the ilanged roller c5 and over the roller c6 and down through the barrel of the frame. The furl-lever carries an arm c7, adapted to engage the bent end d of rod cl, which passes through an opening in the lug or bearing b of the frame and is secured at the opposite end to the brake disk or shoe e, having` a beveled periphery adapted to engage a correspondingly-beveled flange f' on the wind-wheel f. The rod d is bent where the same passes through the opening in lug b', so that as the end d of the rod moves in the arc of a circledue to its engagement by the arm c7 of the pivoted furl-lever the rod will pass through the opening in thelu g without binding. Theod is thus bent so that it is substantially coincident with theline of motion of the rod CZ where the same passes through the bearing. The brake-shoe carries a pair of downwardly-extending arms e c', which straddle the bearing-sleeve b2 on the frame to prevent the rotation of the brakeshoe. A coiled spring g surrounds the rod d and rests betweenthe shoulder d2 thereon and the lug` b to thus resiliently impart to the rod da tendency to move toward the windwheel to throw on the brake. Upon the under face of the arm c of the furl-lever is pro vided a lug c5, which bears against the edge or side of the tail-bone a, to thereby impart to the tail-bone a tendency to move out of the Wind, due to the effect of the spring g tending to rotate the furl-lever. As the tailbone and furl-lever rotate the lug c8 travels along thel edge of the taildoone, due to the fact that the pivot of the furl-lever is different from that of the tail-bone, and when the tail-bone occupies the position shown in dotted lines the lug cs enters the notch a@ in the edge of the tail-bone, thus locking the tail-bone in position out of the wind. Any

.pressure brought to bear against the tail is unable to move the tail, because it is resisted by the arm c of the furllever. By means of the chainc4, however7 the lug ca is moved out of the notch a3, and the tail is thus unlocked and is swung into the wind by the movement of the furl-lever acting upon the tail-bone through the spring a2. Instead of employing the interlocking device in the form .of a lug and notch auyrform of interlocking device may be employed which will serve to lock the tail in position out of the wind.

The resiliently-pressed furl-lever may be otherwise arranged to start the tail `in its movement out of the wind, the only requisite being that the movement of the furl-lever shall act upon the tail to impart an initial movement thereto. The detailed construction illustrated we have found to give the desired effective operation.` Instead of resiliently pressing the furl-lever by a spring,

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equivalent means, as a weight, may be employed.

The spring g besides acting to start the. tail when moving out of the wind also serves to throw on the brake, the furl-lever serving to retract the brake against the tension of the spring when the furl-lever is rotated by the chain c4, and the arm c7 thereby caused to engage and retract the rod d.

Vith the parts in the position illustrated in full lines in Fig. 3 the tailis heldin the wind, and the brake is off. To throw the mill out of the wind, the chain c4 is released, and the spring g acts upon the arm c7 to rotate the furl-lever and swing the tail through the engagement of the lug e8 with the edge of thetail-bone. The spring g acts at the same time to move the brake-shoe e into engagement with the iiangef on the wheel, and when the lug es engages the notch a3 the tail is locked in position out of the wind. In throwing the mill into the wind the furl-leveris rotated by the chain c1 to unlock the tail and move the tail into the wind, and the arm c7 engages the end of the rod CZ to place the spring g under tension and to move the brake-shoe c out of engagement with the iiange f' on the wheel.

Having described our invention, what we claim as new, and desire to secure by Letters Patent, is

l. A hinged tail for a windmill, and a furllever pivoted upon the frame or turn-table and connected with the tail and arranged to interlock therewith when the mill is out of the wind, substantially as described.

2. A hinged tail for a windmill and a furllever pivoted eccentric thereto and connected with said tail and arranged to interlock therewith when the mill is out of the wind, substantially as described.

3. A hinged tail for a windmill and a furllever pivoted eccentric thereto and carrying a lug arranged to engage a notch upon the tail when the mill is out of the wind, substantially as described.

.4. Ahinged tail for a windmill, a furl-lever pivoted upon the frame or turn-table and connected therewith, and means, as a spring, for resiliently pressing said furl-lever in a direction to start the tail out of the wind, substantially as described.

5. A hinged tail for a windmill, a furl-lever pivoted upon the frame or turn-table and connected therewith, a resilient connection, as a coiled spring, between the furl-lever and the tail, and means as a spring for resiliently pressing said furl-lever in a direction to start the tail out of the wind, substantially as described.

b'. A hinged tail for a windmill, a resiliently-pressed furl-lever, a resilient connecn tion, as a coiled spring, between the furl-lever and the tail, said furl-lever being arranged to start the tail out of the wind, and an interlocking device arranged to interlock the furl-lever and the tail when the tail is out of the wind, substantially as described.

7. A hinged tail for a windmill and a resiliently-pressed furl -lever pivoted eccentric thereto, connected therewith and arranged to start the same out of the wind and arranged to interlock with the tail when the mill is out of the wind, substantially as described.

8. A hinged tail for a windmill, and a resiliently-pressed furl -lever pivoted eccentric thereto, connected therewith and having a lug engaging and moving along the tail and arranged to enter a notch or recess on the tail to lock the same when the mill is out of the wind, substantially as described.

9. A hinged t-ail for a windmill, a resiliently -pressed furllever pivoted eccentric thereto and having a lug engaging and moving along the tail and arranged to enter a notch or recess on the tail when the mill is out of the wind and a coiled spring between the furl-lever and the tail, substantially as described.

10. The hinged tail, the furl-lever pivoted eccentric thereto, having the arm c resiliently connected with the tail and carrying the lug c8 arranged to enter the notch a3, the operatingarm c3 and the arm c7, and the spring-pressed rod d adapted to be engaged by said arm c7, substantially as described.

11. rlhe hinged tail, the furl-lever pivoted eccentric thereto, having the arm c' resiliently connected with the tail, and carrying the lug o8 arranged to enter the notch d3, the operating-arm c3 and the arm c7, the springpressed rod d adapted to be engaged by said arm c7 and the brake-shoe connected to said rod, substantially as described.

l2. The combination with a brake-shoe, of a spring to move the same to brake the wheel, a pivoted tail and a pivoted furl-lever for IOS swinging said tail and connected with said brake-shoe to retract the same against the tension of said spring when the mill is swung into the wind, substantially as described.

13. The combination with the brake-shoe and the rod connected therewith, of a spring surrounding said rod to press the shoe to brake the wheel, a pivoted tail and a pivoted furl-lever for swinging said tail and having an arm arranged to engage said rod to retract the brake-slice against the tension of the spring when the mill is swung into the wind, substantially as described.

In witness whereof we have hereunto subscribed our names in the presence of two witnesses.

ROBERT M. DYER. LA VERNE W'. NOYES.

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